Paper-coating machine.



No. 879,787. PATENTED FEB. 18, 1908.

'J. B. MORROW. PAPER COATING MACHINE.

APPLICATION FILED MAY 1,- 1907 2 SHEETS-SHEET 1,

No. 879,787. PATENTED FEB. 18, 19-08. J. B. MORROW.

PAPER COATING MACHINE.

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UNITED srrnrns PATENT OFFICE.

JOHN B. MORROW, OF EAST PEPPERELL, MASSACHUSETTS, ASSIGNOR TO PEPPERELLCARD & PAPER COMPANY, OF SETTS PEPPERELL, MASSACHUSETTS, A CORPORATIONOF MASSACHU- PAPER-COATING MACHINE.

Patented Feb. 18, 1908.

Application filed May 1, 1907. Serial No. 371.232.

' chines, of which the following is' a specification,reference being hadtherein to the accompanying drawings.

My invention relates to machines for coating paper by means of whicha'coating liquor is applied to the surface of the paper to give it thefinish desirable for certain purposes, such, for instance, as half-toneprinting and the like.

The invention relates particularly to a machine which coats both sidesof a web of paper successively without the paper being dried between theapplication of the coatin to the two sides of the aper, as distinguishedfrom machines in which one side of the aper is coated, after which thepa' er is drie and the paper is returned to t e coating ma-- chine to becoated u on the other side.

from the following description taken in connection with the accompanyingdrawings, and the novel features thereof are pointed out and clearlydefined in the claims at the close of the specification.

In the drawings,Figure 1 is a side view, partly in diagram, of a machineembodying my invention. Fig. 2 isa section on line 22, Fig. 1, shown themeans employed to operate the jiggerrushes.

Referring now to the drawings and more i particularly to Fig. 1,the webof pa er is mdicatedat -11 and passes around a r0 l 12, over a rotatingsupport 13, Where it receives the coating on the upper side from thecoating roll-14 and wallower roll 15 which runs in the trough 16containing the liquor. From the rotating support 13, it passes under asecond rotating support 17, where it,

receives a coating on the under side from a second set of coatinginstrumentalities comprisin the coating roll 18, the wallower roll 19 an1i uor trouglh 20. After passing the rolls whic ap ly t e coating, the aer passes scrub-brus cs 21 and 22 whic istribute the coating or, colorevenly over the surface of the paper. It then goes through the ji gerbrus 1es' which work the -mi-xture into t e surface of the aper, leavingit in a smooth and evenly distributed condition.

The invention Wll be fully understood side of the paper at the ointwherethe paper is supported by the r0 1. 13 and just beyond the oint wherethe coat for the upper side of t e paper is a plied. The second brush 22is located on the lower side of the paper opposite a supporting roll 23.The said scrub brushes 21 and 22 are supported in suitable brackets orguides, and are caused to reciprocate transversely of the sheet of paperby means which Will be described later.

The jigger brushes are arranged in pairs 24 and 25, 26 and 27, 28 and29, 30 and 31', and slide in guides 32 and 33 in the frame of themachine. The said jigger brushes are operated in pairs, each brush of apair being caused to reciprocate transversely of the web of paper in thedirection opposite to its mate and with an equal stroke. If themotion ofeach brush of the pair of jigger brushes is not exactly op osite andequal to the motion of the other rush of the pair, it tends to gush thepaper sidewise in the machine. reat difiiculty has heretofore been foundin obtaining the desired motion because in the old forms of machines thesli pin of an eccentric frequently disturbs the adjustment. The lengthof stroke of the various airs of brushes is different and also theifferent pairs of brushes are caused to reci rocate at difierent speeds,the brushes at t e back of the machine being given the shortest strokeand greatest speed. The pairs of brushes are given this oppositereciprocation in the following manner and by a mechanism which insuresthat the stroke of the two brushes of a pair be always op osite andequal. .A shaft 35 driven by, a evel gear 36 meshing with a bevel gear37 on the end of the shaft 38 has upon it two eccentrics 39, one foreach of the first two pairs of jigger brushes and at its other end agearv 101 meshing with a smaller ear 102 on ashaft 103 which has upon itt e eccentrics 104 which operate the remainder of the jigger brushes. Itwill be seen that the first two pairs of brushes are given fewer strokesper minute than the last two pairs. The eccentric straps 40 areconnected by means of connecting-rods 41 to a bell crank lever arm 42pivoted at 43 to a fixed portion ofthe frame of the machine. The saidbell crank lever is provided with 5 two arms 44 and 45 which extendupwardl and downwardly from the pivot 43, and eac engages a slidingconnection 46 pivoted. at 47. to the end of the brush supporting rods34. It will be seen that as the arm 42 is alter nately moved u and downby the eccentric, the upper and ower jigger .brushes of any given pairwill be moved transversely of the paper for equal distances, the saidcollars 46 sliding up and down on the arms 44 and 45 of the'bell cranklever and at the same'time swinging slightly about the pivots 47 As bothbrushes of a pair are operated from a single eccentric by the arms of asingle bell crank lever, all danger of different adjustment between thebrushes of a pairand the inconvenience resulting therefrom is wholly Yobviated. The means provided for the operation of the jigger brushesalsopermits the jigger brushes to be given alarge'numberof strokes perminute, thus permitting the paper in the machine to run at a speedwhichis greater than that at which paper machines have heretofore beenrun.

In order that the length of stroke of the various pairs of jiggerbrushes may be varied as. desired without providing a different eccentric for each ,pair, I employ eccentrics which are adjustable to givea greater or less throw, as desired, within certain limits. The

eccentric 39, working within the strap 40,

' has a large hole.50 in its center, through which the shaft 35 passes,the said hole being considerably larger than the shaft. A face plate 51having a bearing 52 for the shaft 35 1s bolted to the eccentric 39 by.bolts 53 and 54, which are received in slots 55 and 56, so that theeccentric 39 maybe moved toward or away from the center to increase ordecrease the eccentricit as desired.

The two scrub brus es 21 and 22,bymeans.

of which the coating or color is spread, are q pierated by an eccentric70 on the shaft 35. e eccentric'rod 71 is connected to one arm of. a twoarmed bell crank lever 72 whose 0 other arm is pivotally connected tothe sec-- ond scrub brush 22. The other end of the said scrub brush 22is connected to a lever 73 pivoted in its middle at 74 to the frame ofthemachine, and having its other end connected to the first scrub brush21. g

It will .be seen that the reciprocation of the scrub brush 22 moves thesaid lever 73 and causes the other scrub brush to reciprocate with anopposite and equal stroke, the arms of the lever 73 being of equallength.

In machines'of the kind. described in this s ecification, it isfrequently required that a lthe jigger-brushes be lifted simultaneouslyaway from the aper, as for instance, when there has been a break in thepaper, or when sliding connections 46,to which are attached 7 thejiggenbrush frames, are free to slide up or down on the arms 45. Theguides 32 in which the jigger-brushes' slide horizontally are a part ofan upper frame 75 which is se arate from the main frame A of the machlne75 and is free to be lifted upward a slight distance carrying with itthe upper jigger brushes and thus disengaging them from contact with thepaper. The upward movement of the u per frame 75 is guided upon 0' guidepins 76 ast to the main frame A of the machine.- A wedge bar 57 providedat its rear end with rack teeth 58 and sliding in the main frame A ofthe machine carries two or more wedges 59. A similar wedge bar 60 isprovided on the other side of the machine (see Fig. 2) and the .two barsare caused to slide longitudinally by pinions 61 and 62 on a shaft 63which may be caused to revolve by the crank 64. .The movement of thewedges 59 brings them beneath abutments or rolls 66 attached to frame75, thereby lifting the frame until it contacts with the ends of the Ijigger-brush frame, when, by its continued upward movement, thejigger-brushes are li ted out of contact with the paper. The rolls thenpass onto a flat ortion of the said wedges, so that the brus es will notdrop down until released by the reverse rotation of the crank 64.

' What I claim is:

1. In a paper coating machine, the improved operating means forjigger-brushes in pairs whose members lie on opposite sides of thepaper, comprising a three arm bell crank lever, to one arm of which theupper jiggerbrush is connected and to the'lower arm of which the lowerbrush is connected, and operating means connected to the third arm ofthe I said bell crank lever to cause the same to reciprocate, wherebythe said jigger-brushes are given simultaneous movements in oppositedirections.

2. .In a paper coating machine, the improved operating means forjigger-brushes in airs Whlch consists of a three arm bell crank ever tothe upper arm of which the upper jigger-brush is pivotally connected bymeans of a collar slidabl mounted on the said u per arm and to t e lowerarm of which t e said lower jigger-brush is pivotall connected by meansof a collar also slidab y' mounted on the said lower arm of the saidbell crank lever, and o crating means connected to the third arm 0 thesaid bell crank lever, whereby the said jigger-brushes are given simultaneous movements in opposite directions.

3. In a paper coating machine, 'iggerbrushes in pairs and operatingmeans or the said pairs of jigger-brushes, comprising a and to the lowerarms of which the said lower brushes are pivotally connected, a shaftprovided with eccentric having different throws, and connecting meansbetween the said eccentrics and the third arm'of the said bell cranklevers, whereby the said pairs of jiggerbrushes are given differentlengths of strokes, according to the throws of the eccentricswhichoperate them.

4. In a paper coating machine, jiggerbrushes in pairs and operatingmeans for the said pairs of jigger-brushes, comprising a three arm bellcrank lever for each pair to the upper arms of which the upperjigger-brushes o the pairs are pivotally connected and to the lower armsof which the said lower brushes are pivotally connected, shafts runningat different speeds provided with eccentrics having different throws,and connecting means between said eccentrics and the third arm of thesaid bell cranklever, whereby the said pairs of jigger-brushes are givendifferent lengths of stroke and different speeds according to the throwsof the eccentrics which operate them and the speeds of the shafts uponwhich the said eccentrics are located.

5. In a aper coating machine, the combination wit an upper and lower setof jiggerbrushes in pairs and operating means therefor, of lifting meansoperating upon one set of jigger-brushes to move simultaneously thebrushes comprising the said set out of contact with the paper passingbetween the said 7 two sets of jigger-brushes.

6( In a aper coating machine, the combination wit igger-bruShes in pairsand operating means therefor, of lifting means for simultaneouslylifting the upper brushes of the said pairs, comprising a frame in whichthe said iggerbrus es reciprocate and having abutments thereon, wedgescontacting with the said abutments, and means for moving all the saidwedges simultaneously to lift the said frame and the saidjigger-brushes.

7. In a aper coating machine, the combination wit igger-brushes in pairsand operating means therefor comprising bell crank levers to the up erarms 0 which the up iiar Y jigger-brushes o the said pairs are pivotaconnected by collars sliding on the said upper arms of the said bellcrank levers, of li ting means for simultaneously 'lifting the upperbrushes of the said pairs, com rising a frame in which the saidjigger-brus es reci rocate and having abutments thereon, a we ge bareach side of the machine provided at their ends with rack teeth, wedgesattached to the said wedge bars and contacting with abutments on thesaid frame, a cross-shaft, pinions on the said cross-shaft engaging thesaid rack teeth, whereby the said wedge bars are caused to slidelongitudinally and force the said wedges beneath the abutments on theframe.

8. In a aper coating machine, the combination wit jigger-brushes inpairs and operating means therefor,.of lifting means for simultaneouslylifting the upper brushes of the said pairs, com rising a frame in whichthe said jigger-b-ruslies reciprocateand having abutments thereon,wedges terminating in a horizontal surface and contacting with the saidabutments, and means for movingall the said wedges simultaneously,whereb the said upper jigger-brushes are lifted simu taneously and aremaintained in their lifted position when the said abutment is upon thesaid horizontal surface of the wedge.

In testimony whereof I aflix my signature, in presence of two witnesses.

JOHN B. MoRRoW.

Witnesses:

GEORGE P. DIKE, JOHN H. PARKER.

